Wundt studied briefly with Johannes Peter Müller, before joining the University's staff, becoming an assistant to the physicist and physiologist Hermann von Helmholtz in 1858.[8][9] There he wrote Contributions to the Theory of Sense Perception (1858–62).[10] In 1865, he wrote a textbook about human physiology. However, his main interest was not in physiology but in the medical field of pathological anatomy.[11] In 1867 he became a professor in acquainting medical students with the exact physical needs for medical investigation. In 1874, he became a professor of "Inductive Philosophy" in Zurich. In 1875, he moved back to Leipzig.